<template>
  <div class="login-container">
    <div class="center">
      <div class="left">
        <h1>Hi,你好！</h1>
        <h2>欢迎进入APS排产系统</h2>
        <h5>Welcome to the APS production scheduling system</h5>
      </div>
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        autocomplete="on"
        label-position="left"
      >
        <div class="title-container">
          <h3 class="title">
            {{ $t("login.logIn") }}
          </h3>
        </div>

        <el-form-item prop="username">
          <span class="svg-container">
            <img src="@/assets/imgs/account.png" alt="" />
            <!-- <svg-icon icon-class="user" /> -->
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            :placeholder="$t('login.username')"
            name="username"
            type="text"
            tabindex="1"
            autocomplete="on"
          />
        </el-form-item>

        <el-tooltip
          v-model="capsTooltip"
          content="Caps lock is On"
          placement="right"
          manual
        >
          <el-form-item prop="password">
            <span class="svg-container">
              <img src="@/assets/imgs/password.png" alt="" />
              <!-- <svg-icon icon-class="password" /> -->
            </span>
            <el-input
              :key="passwordType"
              ref="password"
              v-model="loginForm.password"
              :type="passwordType"
              :placeholder="$t('login.password')"
              name="password"
              tabindex="2"
              autocomplete="on"
              @keyup.native="checkCapslock"
              @blur="capsTooltip = false"
              @keyup.enter.native="handleLogin"
            />
            <span class="show-pwd" @click="showPwd">
              <svg-icon
                :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
              />
            </span>
          </el-form-item>
        </el-tooltip>
        <el-form-item class="ecode" prop="code" v-if="repeatTimes >= 2">
          <el-input v-model="loginForm.code" placeholder=""></el-input>
          <canvas
            ref="canvas"
            @click="draw"
            width="140"
            height="40"
            style="cursor: pointer"
          ></canvas>
          <!-- <verify-code ref="verifyCode" v-model="code"></verify-code> -->
        </el-form-item>
        <el-button
          :loading="loading"
          type="primary"
          style="width: 100%; margin-bottom: 30px"
          @click.native.prevent="handleLogin"
          class="login"
        >
          {{ $t("login.logIn") }}
        </el-button>

        <div style="position: relative">
          <div class="tips">
            <span class="forgotPassword"> 忘记密码? </span>
            <span class="contactAdministrator"> 联系管理员 </span>
          </div>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script>
import { validUsername } from "@/utils/validate";

export default {
  name: "Login",
  data() {
    var validatePass = (rule, value, callback) => {
      if (value === "") {
        callback(new Error("请输入验证码"));
      } else {
        const code = this.codes.join("").toLowerCase(); // 将验证码转换为小写
        if (code !== value.toLowerCase()) {
          // 将输入值转换为小写后比较
          callback(new Error("请输入正确的验证码"));
          this.draw();
        } else {
          callback();
        }
      }
    };
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error("Please enter the correct user name"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error("The password can not be less than 6 digits"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "admin",
        password: "111111",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", validator: validateUsername },
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePassword },
        ],
        code: [{ validator: validatePass, trigger: "blur" }],
      },
      passwordType: "password",
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {},
      codes: [],
      ctx: "",
      colors: ["red", "yellow", "blue", "green", "pink", "black"],
      code_Len: 4,
      repeatTimes: 0,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        const query = route.query;
        if (query) {
          this.redirect = query.redirect;
          this.otherQuery = this.getOtherQuery(query);
        }
      },
      immediate: true,
    },
    repeatTimes: {
      handler(val) {
        if (val == 2) {
          this.$nextTick(() => {
            this.draw();
          });
        }
      },
      immediate: true,
      deep: true,
    },
  },
  created() {
    // window.addEventListener('storage', this.afterQRScan)
  },
  mounted() {
    if (this.loginForm.username === "") {
      this.$refs.username.focus();
    } else if (this.loginForm.password === "") {
      this.$refs.password.focus();
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    checkCapslock(e) {
      const { key } = e;
      this.capsTooltip = key && key.length === 1 && key >= "A" && key <= "Z";
    },
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("user/login", this.loginForm)
            .then(() => {
              this.$router.push({
                path: this.redirect || "/",
                query: this.otherQuery,
              });
              this.loading = false;
            })
            .catch((err) => {
              console.log(err);
              this.repeatTimes++;
              this.loading = false;
            });
        } else {
          console.log("error submit!!");
          this.repeatTimes++;
          return false;
        }
      });
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== "redirect") {
          acc[cur] = query[cur];
        }
        return acc;
      }, {});
    },
    draw() {
      this.generateRandom();
      this.drawText();
    },
    draw() {
      this.generateRandom();
      this.drawText();
    },
    generateRandom() {
      this.codes = [];
      const chars = "abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
      const charsArr = chars.split("");

      for (let i = 0; i < this.code_Len; i++) {
        const num = Math.floor(Math.random() * charsArr.length);
        this.codes.push(charsArr[num]);
      }
    },

    drawLine() {
      const lineNumber = 3; // 线条条数
      const lineX = 140;
      const lineY = 30; // 最大线条坐标
      for (let i = 0; i < lineNumber; i++) {
        this.ctx.strokeStyle = this.colors[Math.floor(Math.random() * 5)];
        this.ctx.beginPath();
        this.ctx.moveTo(
          Math.floor(Math.random() * lineX),
          Math.floor(Math.random() * lineY)
        );
        this.ctx.lineTo(
          Math.floor(Math.random() * lineX),
          Math.floor(Math.random() * lineY)
        );
        this.ctx.stroke();
      }
    },
    drawText() {
      const canvas = this.$refs.canvas;
      this.ctx = canvas.getContext("2d");

      this.ctx.fillStyle = "#BFEFFF";
      this.ctx.fillRect(0, 0, 140, 40);
      this.ctx.font = "20px Verdana";

      let x = 15;

      for (let i = 0; i < this.code_Len; i++) {
        this.ctx.fillStyle = this.colors[Math.floor(Math.random() * 5)];
        this.ctx.fillText(this.codes[i], x, 25);
        x = x + 30;
      }

      this.drawLine();
    },
    // afterQRScan() {
    //   if (e.key === 'x-admin-oauth-code') {
    //     const code = getQueryObject(e.newValue)
    //     const codeMap = {
    //       wechat: 'code',
    //       tencent: 'code'
    //     }
    //     const type = codeMap[this.auth_type]
    //     const codeName = code[type]
    //     if (codeName) {
    //       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
    //         this.$router.push({ path: this.redirect || '/' })
    //       })
    //     } else {
    //       alert('第三方登录失败')
    //     }
    //   }
    // }
  },
};
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #171f31;
$cursor: #171f31;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    background: #ffffff;
    border: 1px solid #e6e6e6;
    border-radius: 4px;
    color: #171f31;
  }
}
.login {
  height: 60px;
  background: #1b84ed;
  font-size: 20px;
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #000;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  background: url("~@/assets/imgs/login-bj.png") top center / 100% 100%;
  .center {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 145px;
    padding-right: 100px;

    .left {
      color: #fff;
      //   margin-right: 180px;
      h1 {
        font-size: 92px;
      }
      h2 {
        font-size: 80px;
        margin: 58px 0 39px;
      }
      h5 {
        font-size: 32px;
      }
    }
  }

  .login-form {
    position: relative;
    min-width: 460px;
    // max-width: 100%;
    padding: 60px 30px;
    // margin: 0 auto;
    overflow: hidden;
    background: #fff;
    .title {
      color: #000;
    }
  }

  .tips {
    font-size: 14px;
    margin-top: 20%;
    text-align: center;
    cursor: pointer;
    .forgotPassword {
      color: #8fa1c9;
    }
    .contactAdministrator {
      color: #1b84ed;
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
    img {
      vertical-align: middle;
    }
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      //   margin: 0px auto 40px auto;
      //   text-align: center;
      font-weight: bold;
    }

    .set-language {
      color: #fff;
      position: absolute;
      top: 3px;
      font-size: 18px;
      right: 0px;
      cursor: pointer;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
.ecode {
  .el-input {
    width: 58%;
  }
  ::v-deep .el-form-item__content {
    display: flex;
    width: 100%;
    justify-content: space-between;
  }

  canvas {
    vertical-align: bottom;
    flex: 1;
  }
}
</style>
